the most difficult part will be the selling of the horses themselves. you cant simply cram a horse into a sign.
yea but someone (a mod or supermod) will probably create a market for them and you can rent to barns/stables out for 5k. like the market
Horses will most likely not be in then main world and even if they were, autobutcher would kill them every hour.
No like it would be in in the market portal and you would follow the green path in front of you (new) and there would be the horse shops!
Horse eggs should be for sale in the NetherStar rare shop for maybe 1500 Nstars? This would increase demand for NetherStars and there would be very few horses in the main world with breeding disabled so it wouldn't cause much lag.